15 Best Solar Companies in Longmont, CO (2024 Reviews)

We analyzed over 1500 solar companies in the nation,
and have selected the top 15 in Longmont based on:

  • Customer review scores
  • Service area for Longmont, CO
  • Company policies and services offered
  • Accreditations and certifications

Average Longmont homeowner saves $1,563/year with solar panels

By EcoWatch Local Advisors

Data Analysis: James Savino

Ranking Methodology: Karsten Neumeister

Updated June 24, 2024

Why you can trust EcoWatch

We work with a panel of solar experts to create unbiased reviews that empower you to make the right choice for your home. No other site has covered renewables as long as us, which means we have more data and insider information than other sites. Our rankings are never affected by revenue or partnerships.

Best Solar Companies in Longmont

If you’re trying to find the best solar companies in Longmont, going through so many options can be overwhelming, but it can pay off since adopting solar energy can offer so many good perks. One of the pros of living in Longmont is you have access to plenty of the best solar panel installation companies in the nation.


As you set out on your search for the best solar companies in Longmont, you might realize that there are a great number of providers to choose from. So, we’ve accumulated an expertly curated list of the top solar companies in the area.To get a sense of what it would cost to put solar panels on your roof, you can click the button below to be connected to a certified installer near you.

Best Solar Financing

Blue Raven Solar

★★★★★
4.5
  • Industry-leading in-house financing
  • Competitive pricing
  • Excellent reputation
  • Doesn't offer solar batteries

Best for Leasing

Sunrun

★★★★★
4.0
  • Expansive service area
  • Many financing options
  • Some reported issues with customer service
  • Some reported issues with door-to-door sales

Outstanding Local Installer

Smart Wave Solar

★★★★★
4.0
  • Installations include backup power guarantee
  • Outstanding customer service
  • Offers rewards for customer referrals
  • Expensive
  • No assistance with solar financing
  • Limited brands of solar equipment available

EcoWatch Rankings for Solar Companies in Longmont

Best Local Installer
ecowatch badge icon

EcoWatch Rating

4.8/5

Smart Wave Solar

  • Pros icon Prompt Service Delivery
  • Pros icon Informative Resources
  • Pros icon Clear Pricing Policy
  • Pros icon Reliable Customer Support
  • Pros icon Free Quotes
  • Con icon Limited information available on website

Services Offered

  • Service icon Financing Assistance
  • Service icon Panel Installation
  • Service icon Battery Storage

Website: https://www.smartwavesolar.com/
Address: 4201 Madison St, Denver, CO 80216
Phone: 7205473422
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.9/5

Columbine Roofing & Solar

  • Pros icon Family-Operated Business
  • Pros icon Clear Pricing Policy
  • Pros icon Informative Resources
  • Pros icon Free Quotes
  • Pros icon Reliable Customer Support
  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation
  • Service icon Skilled Repairs
  • Service icon Consultation
  • Service icon Financing Assistance

Website: https://www.columbineroofingllc.com/
Address: 328 Coffman St, Longmont, CO 80501
Phone: 3039524242
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.7/5

Klick Solar

  • Pros icon Free Quotes
  • Pros icon Prompt Service Delivery
  • Pros icon Clear Pricing Policy
  • Pros icon Informative Resources
  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation
  • Service icon Financing Assistance
  • Service icon Consultation

Website: https://klicksolar.com/
Address: 1811 Hover St C, Longmont, CO 80501
Phone: 7204659073
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.8/5

Independent Power

  • Pros icon Reliable Customer Support
  • Pros icon Clear Pricing Policy
  • Pros icon Free Quotes
  • Con icon Limited information available on website

Services Offered

  • Service icon Off-Grid Solar Systems
  • Service icon Financing Assistance
  • Service icon Battery Storage
  • Service icon Panel Installation

Website: https://www.solarips.com/
Address: 1501 Lee Hill Dr UNIT 24, Boulder, CO 80304
Phone: 3034430115
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Progreen Solar

  • Pros icon Informative Resources
  • Pros icon Clear Pricing Policy
  • Pros icon Free Quotes
  • Pros icon Reliable Customer Support
  • Pros icon Prompt Service Delivery
  • Con icon Limited information available on website

Services Offered

  • Service icon Off-Grid Solar Systems
  • Service icon Panel Installation
  • Service icon Battery Storage

Website: https://www.progreen-solar.com/
Address: 1030 Boston Ave, Longmont, CO 80501
Phone: 3034841410
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Flatiron Solar

  • Pros icon Free Quotes
  • Pros icon Informative Resources
  • Pros icon Prompt Service Delivery
  • Pros icon Reliable Customer Support
  • Pros icon Clear Pricing Policy
  • Con icon Limited information available on website

Services Offered

  • Service icon Consultation
  • Service icon Panel Installation
  • Service icon System Decommissioning
  • Service icon Financing Assistance
  • Service icon Skilled Repairs
  • Service icon Cleaning and Maintenance

Website: https://www.flatironsolar.com/
Address: 4721 Oxford Rd, Longmont, CO 80503
Phone: 3037754574
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Custom Solar

  • Pros icon Reliable Customer Support
  • Pros icon Informative Resources
  • Con icon Limited information available on website

Services Offered

  • Service icon Battery Storage
  • Service icon Panel Installation
  • Service icon Cleaning and Maintenance
  • Service icon Solar Carports

Website: http://www.customsolar.us/
Address: 2840 Wilderness Pl, Boulder, CO 80301
Phone: 3038598597
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

The Solar Revolution

  • Pros icon Clear Pricing Policy
  • Pros icon Informative Resources
  • Pros icon Reliable Customer Support
  • Pros icon Free Quotes
  • Con icon Limited information available on website

Services Offered

  • Service icon Tesla Powerwall
  • Service icon Financing Assistance
  • Service icon Panel Installation
  • Service icon Battery Storage
  • Service icon Off-Grid Solar Systems

Website: https://www.thesolarrevolution.com/
Address: 5723 Arapahoe Rd Suite 1A, Boulder, CO 80303
Phone: 3038159360
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.7/5

Photon Brothers

  • Pros icon Reliable Customer Support
  • Pros icon Free Quotes
  • Pros icon Prompt Service Delivery
  • Pros icon Clear Pricing Policy
  • Pros icon Informative Resources
  • Con icon Limited information available on website

Services Offered

  • Service icon Consultation
  • Service icon Solar Panel Upgrades
  • Service icon Battery Storage
  • Service icon Tesla Powerwall
  • Service icon Skilled Repairs
  • Service icon Financing Assistance
  • Service icon Cleaning and Maintenance
  • Service icon Panel Installation

Website: https://www.photonbrothers.com/denver/
Address: 7705 W 108th Ave, Broomfield, CO 80021
Phone: 7203703344
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Lumos Solar

  • Pros icon Informative Resources
  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation
  • Service icon Solar Carports

Website: http://www.lumossolar.com/
Address: 555 Aspen Ridge Dr UNIT B, Lafayette, CO 80026
Phone: 3034492394
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Aqua Care Solar LLC

  • Pros icon Clear Pricing Policy
  • Pros icon Reliable Customer Support
  • Pros icon Informative Resources
  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation
  • Service icon Cleaning and Maintenance
  • Service icon Skilled Repairs
  • Service icon Permit Assistance

Website: http://www.aquacaresolar.com/
Address: 5171 Eldorado Springs Dr ste d, Boulder, CO 80303
Phone: 3035894428
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.8/5

Elevated Independent Energy

  • Pros icon Informative Resources
  • Pros icon Clear Pricing Policy
  • Pros icon Free Quotes
  • Con icon Limited information available on website

Services Offered

  • Service icon Cleaning and Maintenance
  • Service icon Off-Grid Solar Systems
  • Service icon Panel Installation
  • Service icon Battery Storage
  • Service icon Solar Panel Upgrades
  • Service icon System Decommissioning

Website: http://www.einrg.com/
Address: 7000 Broadway STE 104, Denver, CO 80221
Phone: 9704604970
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Green Collar Crew

  • Pros icon Informative Resources
  • Pros icon Free Quotes
  • Pros icon Reliable Customer Support
  • Pros icon Clear Pricing Policy
  • Con icon Limited information available on website

Services Offered

  • Service icon Consultation
  • Service icon Permit Assistance
  • Service icon Panel Installation

Website: https://greencollarcrew.com/
Address: 11001 W 120th Ave #400, Broomfield, CO 80021
Phone: 3034955510
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

5.0/5

Vanguard Solar Services

  • Pros icon Prompt Service Delivery
  • Pros icon Informative Resources
  • Pros icon Reliable Customer Support
  • Pros icon Free Quotes
  • Con icon Limited information available on website

Services Offered

  • Service icon Cleaning and Maintenance
  • Service icon Consultation
  • Service icon System Decommissioning
  • Service icon Panel Installation

Website: http://www.vanguardsolarservices.com/
Address: 6145 Broadway Unit 5, Denver, CO 80216
Phone: 7209098899
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.9/5

Apollo Energy

  • Pros icon Reliable Customer Support
  • Pros icon Clear Pricing Policy
  • Pros icon Informative Resources
  • Pros icon Free Quotes
  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation
  • Service icon System Decommissioning

Website: https://www.harnessoursun.com/
Address: 1400 E 66th Ave Unit B, Denver, CO 80229
Phone: 7205828258

Methodology: How We Ranked the Best Solar Companies in Longmont

EcoWatch's solar experts analyzed each solar company in Longmont based on criteria such as its reputation in the industry, customer reviews, services, warranty coverage and financing. Using this solar methodology, we used the data we collected to rate and rank each company and narrow down our picks for the best solar companies in Longmont


Below are some the criteria we examined specifically for Colorado solar companies

  • Brand reputation and certifications (20%): We take each company's Better Business Bureau (BBB) score into consideration, as well as how long the installer has been in business (at least 5 years is required, 10 preferred) and what type of solar certifications it holds.
  • Customer reviews (20%): Trust is a top priority at EcoWatch, so we take customer experience under close consideration. We scour different review sites and customer testimonials when ranking our top solar companies, checking sites such as Trustpilot and Google Reviews. We also consider any potential complaints or lawsuits filed against these companies and award or remove points accordingly.
  • Warranty (20%): A company earns a perfect score in this category if it offers 25-year warranties that cover performance, product and workmanship. The industry standard that we measure companies against is 25-year product and performance warranties, along with a 10-year workmanship warranty. We also look closely into the track record of the post-installation support each company provides in terms of honoring its contracts
  • Solar services (10%): All of the companies we review install solar panels, but we award companies higher points if they offer additional services for customers, like battery installation, energy-efficiency audits, and EV chargers.
  • Pricing and financing (10%): It's hard to get exact quotes for solar projects, but we use marketplace research to determine how each company prices its equipment and installation services. Additionally, companies that offer more help for panel financing — like in-house loans, leases, or PPAs — score higher than those that don't.
  • Availability (10%): The bigger the service area, the higher the company will score.
  • Transparency and accessibility (5%): Solar installers that offer free consultations and easy contact methods score higher in this category.
  • Environmental, social and corporate governance factors (5%): A company earns a perfect score in this category if it offers public data disclosure, addresses end-of-life (EOL) products or processes, and demonstrates a commitment to uplifting the communities that it serves.

The Cost and Benefits of Solar in Longmont

The cost of installing a solar panel system has dropped immensely over the past few years, but it’s still a large investment for most homeowners.There are several factors you should consider when trying to determine costs and your potential savings, such as:

  • How much sunlight your roof gets: This, plus how your roof is set up, affects affect how much electricity your solar panels can produce.
  • The type and model of solar panels you’re thinking of getting: More efficient models are more costly, so that will influence your budget for your solar project.
  • Incentives: The federal solar investment tax credit, which everyone in the U.S. is eligible for, lets you deduct 0 of the cost of your solar system installation from your federal taxes. Plus, not including incentives, you can save about $19,000 over 20 years on your energy bills.
  • How much electricity your home consumes: Homes that use plenty of power each month may call for more solar panels and, consequently, be more expensive, but will also enjoy more savings over time.

There are many good benefits of solar despite the upfront cost of installation. It can help the environment and your wallet. In addition, it can boost the value of your home, resulting in even more benefits if you want to sell your home later.

Solar Savings Calculator for {{ solarcalc.name }}

For an idea of both how much you could save and help protect the Earth by installing solar panels, you can play around with the calculator below. You can also view our solar panel cost guide for Longmont, CO.

{{ solarcalc.time_period|number:0 }} -year savings{{ solarcalc.total_savings()|currency }}
Estimated cost{{ solarcalc.array_cost() | currency }}
Estimated incentives{{ solarcalc.incentive_savings() | currency }}
Payback period{{ solarcalc.payback_period()|number:1 }} years
CO2 emissions prevented{{ solarcalc.CO2_total()|number:0 }} lbs
Miles driven equivalent{{ solarcalc.CO2_total()/0.78|number:0 }} mi
Why leave {{ solarcalc.total_savings()|currency }} on the table? Help the environment and your wallet by switching to solar. SAVE NOW

Electricity rate:
{{ solarcalc.elec_cost/10 }} ¢
Shade:
{{ solarcalc.shade }} %
Time period:
{{ solarcalc.time_period }} years
System size:
{{ solarcalc.system_size }} kW
Additional Incentives:
{{ solarcalc.additional_incentives|currency }}

Switching to solar in {{ solarcalc.name }} can save you {{ solarcalc.total_savings() | currency }} over the course of {{ solarcalc.time_period|number:0 }} years.

Solar Incentives in Longmont

In order to increase the number of homes and businesses that use solar power, incentives are offered by the government – and even some utility companies – to help make going solar more economical and accessible.When you install solar panels, you can take advatage of the federal tax credit, or ITC. This credit currently lowers your tax bill by 0 of the cost of your solar panels. Plus, there may often be some state and city incentives that you can use to further cut back on the cost of solar of solar panels. Take a look at our article on solar incentives to find out what incentives you can take advantage of.

Environmental Impact of Switching to Solar in Longmont

A lot of people want to do their part for the planet, which often is the primary reason for installing a solar system.But how much can switching to solar actually affect the environment? In a city like Longmont where commute times can be pretty long, going solar can help help reduce the carbon footprint of being on the road a lot.In fact, if you adopt solar power, you could look forward to lowering your carbon dioxide emissions by about 100 pounds each year. Since solar energy is renewable and makes electricity without releasing carbon emissions, installing solar panels is one easy step you can take to help the environment.

Best Solar Financing

Blue Raven Solar

★★★★★
4.5
  • Industry-leading in-house financing
  • Competitive pricing
  • Excellent reputation
  • Doesn't offer solar batteries

Best for Leasing

Sunrun

★★★★★
4.0
  • Expansive service area
  • Many financing options
  • Some reported issues with customer service
  • Some reported issues with door-to-door sales

Outstanding Local Installer

Smart Wave Solar

★★★★★
4.0
  • Installations include backup power guarantee
  • Outstanding customer service
  • Offers rewards for customer referrals
  • Expensive
  • No assistance with solar financing
  • Limited brands of solar equipment available

EcoWatch's Longmont, CO Solar Company Rankings FAQs

Which solar company is the best in Longmont?

In Longmont, Smart Wave Solar is the top local solar company. Our team of experts rates it 4.80 stars, so it's a solid choice if you're planning to add solar panels to your house.

What are the best and worst things about solar power?

A few of the biggest pros are that it reduces your electricity bills, it’s environmentally friendly, and it can provide a decent return on your investment (ROI). The most notable cons are that solar panels don’t produce electricity at night, there is a high upfront cost and solar panels can look clunky on your roof.

How long does it take to see a return on your investment after installing solar panels?

Solar panels generally pay for themselves in about 14.3 years, but your solar payback period will vary depending on your utility costs. The more your typical energy bill, the quicker your solar panel system will pay for itself.

How long do solar panels last?

On average, solar panels can last about 25 to 30 years. Some even last up to 50 years, but efficiency decreases by about 0.8% each year. You can choose to replace them sooner if you want to maintain a higher amount of energy production.

Our goal is to reach as many people as we can with sensible solutions like solar energy. Our team of full-time local researchers collects solar price and installation data for every city in America then compiles it to create these digestible city guides. If you want to read our solar expert’s opinion on the top solar companies featured here, follow this link.

Company research was conducted by Melissa Smith and Karsten Neumeister. Local data analysis was conducted by James Savino. See something we missed or could do better? Email the editor.